php如何清除bom方法
<?php set_time_limit(0); if (isset($_GET['dir'])){ //设置文件目录 $basedir=$_GET['dir']; }else{ $basedir = '.'; } $auto = 1; $basedir = dirname(__FILE__)."/include"; checkdir($basedir); function checkdir($basedir){ if ($dh = opendir($basedir)) { while (($file = readdir($dh)) !== false) { if ($file != '.' && $file != '..'){ if (!is_dir($basedir."/".$file)) { echo "filename: $basedir/$file ".checkBOM("$basedir/$file")." <br>"; }else{ $dirname = $basedir."/".$file; checkdir($dirname); } } } closedir($dh); } } function checkBOM ($filename) { global $auto; $contents = file_get_contents($filename); $charset[1] = substr($contents, 0, 1); $charset[2] = substr($contents, 1, 1); $charset[3] = substr($contents, 2, 1); if (ord($charset[1]) == 239 && ord($charset[2]) == 187 && ord($charset[3]) == 191) { if ($auto == 1) { $rest = substr($contents, 3); rewrite ($filename, $rest); return ("<font color=red>BOM found, automatically removed</font>"); } else { return ("<font color=red>BOM found.</font>"); } } else return ("BOM Not Found."); } function rewrite ($filename, $data) { $filenum = fopen($filename, "w"); flock($filenum, LOCK_EX); fwrite($filenum, $data); fclose($filenum); } ?>
使用方法说明:
新建一个文件,然后把上面的代码复制在文件里,然后把此文件放在网站根目录下,运行此文件,就可以达到目的清除bom,谨记一定要放在网站根目录下面!
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